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Note 18 - Supplemental Cash Flow Information - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2021
Interest and dividends received	$ 5,754	$ 1,684	$ 1,024
Income taxes refunded	325	17	0
Income taxes paid	$ 75	$ 0	$ 142

X

- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
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X

- Definition

The amount of cash received during the period as refunds for the overpayment of taxes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
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-Name Accounting Standards Codification
-Section 45
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X

- Definition

Cash received for dividends and interest on the entity's equity and debt investments during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (b)
-Publisher FASB
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-Publisher FASB
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